Dr. riehm shows you an unlabeled tissue slide and says the tissue is very resistant to stretching, tearing, and compression. he then asks you what you can conclude about the structure of the extracellular matrix (ecm)

Question 17: B: They may provide evidence that Pennsylvania was once covered by warm ocean waters since most corals are presently found in these environments.

Question 14: I think the answer for this question might be A. But I'm not sure.

Question 10: D: Plates move toward each other and volcanic mountains form.